Worth some money. The teapot is a unique handmade clay sculpture handicraft in China, so the market price in the auction market has soared. It's an antique with collection value. Known as "what is the best jewelry in the world, Yixing purple sand is the most important", the material of purple sand pot is valuable. Yixing Tang Dou Ceramic Cooperative is a factory in the early days of liberation, which has time value, so it is valuable. The raw material for firing teapot is mud, which can be divided into purple mud, green mud and red mud. The mud that can be used for firing teapot is buried deep under the rock, and the thickness of the mud layer varies from tens of centimeters to one meter. According to the petrographic analysis of Shanghai Silicate Research Institute, purple sand yellow mud belongs to Gaoling-Yingshi-mica type, with high iron content, with the highest iron content reaching 8%. The teapot is fired at high oxygen and high temperature, with flat fireworks in contact, and the firing temperature is between 1 100 and 1200 degrees. The water absorption of the finished teapot is above 2%. The clay raw materials of teapot are purple mud, green mud and red mud, commonly known as "rich soil". Because it is produced in Yixing, Jiangsu, it is called Yixing Zisha.